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Monthly Archives: November 2014
How unusual was last week’s cold snap?
Through Friday, Madison experienced 10 straight days with temperatures at or below 32 degrees, or freezing.
And though that streak was interrupted (delightfully) over the weekend, it appears we will experience a return to sub-freezing temperatures by Tuesday. Continue reading
What kind of winter are we expecting?
Seasonal climate forecasts rely heavily on established relationships between climate and key climate forcing mechanisms, such as El Niño.
On seasonal time scales, the influence on the atmosphere of ocean temperature anomalies such as El Niño or La Niña is probably the single most crucial forecast component. This is especially true for forecasts of Wisconsin winters. Continue reading
What location has the lowest average wind speed in the United States?
This question requires consideration of the number of factors that conspire to produce the wind.
Large-scale weather systems are perhaps the best-known features that impact the winds at a location. Continue reading
Category: Meteorology
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Did we have an Indian summer this year?
We are not sure of the origin of this expression, but it has been used for over 200 years in reference to a weather phenomenon that occurs in the fall, usually in October for our state. It occurs when the autumn weather is characterized as sunny and warm.
Indian summer can occur only after the first frost but before the first snowfall. It occurs after the leaves have turned color and includes dry weather conditions with maximum temperatures greater than 65 degrees and minimum temperatures greater than 33 degrees. Continue reading
